CN2625572Y - Down-hole inner tube stepped cementing device - Google Patents
Down-hole inner tube stepped cementing device Download PDFInfo
- Publication number
- CN2625572Y CN2625572Y CN 03217998 CN03217998U CN2625572Y CN 2625572 Y CN2625572 Y CN 2625572Y CN 03217998 CN03217998 CN 03217998 CN 03217998 U CN03217998 U CN 03217998U CN 2625572 Y CN2625572 Y CN 2625572Y
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- Prior art keywords
- pipe
- seal
- well
- cementing
- box cupling
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- Expired - Fee Related
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Abstract
The utility model discloses a stratified cement injection device for an underground interior pipe in oil industry which is used for various kinds of underground well cementing technologies. The device is provided with an upper joint and an injection pipe nipple and is composed of a seal mechanism, a positioning mechanism, a cement injection mechanism and a lower seal mechanism; the mechanisms are connected and assembled together by a connecting pipe and the device is connected with an underground pipe column by the upper joint and the lower joint. When applied in the scene, the utility model is descended to the well by being connected with an interior pipe column; the well is cemented progressively from bottom to upper, which solves the technical difficulty of progressively swelling a packer outside a bushing by the interior pipe and stratified cement injection, and thus enabling to meet the need of selective well cementing of the multiple-layer well and reaching the goal of directive and sectionalized well cementing.
Description
Technical field
The utility model relates to the cementing equipment of petroleum industry, and pipe stage cementing device is used for various underground water-injection mud well shaft fixing technologies in particularly a kind of down-hole.
Technical background
In the completion practice of petroleum drilling engineering, need carry out cementing well construction to the well bore of finishing drilling, with closed sandwich, allow the crude oil in the oil reservoir flow into down-hole oil production equipment.The cementing of interior pipe method is a cementing operation difficult problem that solves the more shallow and big hole large scale sleeve pipe of well depth at first, can prevent cementing and for the slurry process in sleeve pipe, scurry groove and generation excessive on top power.Afterwards, this technology was applied to the completion of special oil reservoir or exceptional well, pipe method completion in being referred to as.At present, the on-the-spot inner-string cementing instrument that uses mainly contains following two kinds: a kind of is that petroleum industry publishing house publishes " the 521st page of disclosed a kind of inner-string cementing device of Fig. 4-59 of the drilling well handbook first volume one book chapter 4 the 7th joint " cementing technology " literary composition June nineteen ninety; Another kind is that the patent name that Patent Office of the People's Republic of China announces is " seal of tube device in the automatic control type ", and the patent No. is 88207151.3.This patent has been introduced a kind of interior seal of tube device of automatic control type that is used for tubing string well cementing operation in the oil drilling, when using inner-string cementing, can control the amount of injecting cement automatically, and pipe method cementing technology has improved a step in making.But, more than two technology only connect a sealing intubate by joint, with be connected sleeve pipe seal socket bottom and be used, having limited cementing job must be from sleeve bottom, can not realize the cemented requirement of selectively grading, promptly can not carry out step by step or the selectivity expansion, can not carry out the stage cementing well cementing operation multiple expansion formula packer.
Summary of the invention
Purpose of the present utility model is to make pipe stage cementing device in a kind of down-hole that can carry out the stage cementing well cementing operation in having the well of a plurality of oil reservoirs.Overcome defective of the prior art, improve the degree of perfection of well cementation effect and oil reservoir, reduce production costs and working strength of workers.
The present technique solution can reach above-mentioned purpose: pipe stage cementing device in a kind of down-hole, comprise top connection and inject pipe nipple, this device is made up of last sealing mechanism, detent mechanism, cement injecting mechanism and lower seal mechanism, said mechanism is linked and packed together with tube connector, with lower contact this device is connected with running string by top connection.
Compared with prior art, the utility model has realized that the technical barrier of stage cementing can satisfy the requirement of the well selectively grading cementing well of multiple zone with interior pipe expansion sleeve external packer step by step.Really realized targetedly, the purpose of subsection water injection mud well cementation, have the drilling out of need not, not polluted reservoir, advantage such as site operation is simple, well cementation is effective.Cost of production and working strength of workers have been reduced effectively.
Description of drawings
Accompanying drawing 1 is first figure of the utility model structural representation.
Accompanying drawing 2 is second figure of the utility model structural representation.
The specific embodiment
Below in conjunction with embodiment the utility model is done further detailed description: referring to attached Fig. 1 and 2, pipe stage cementing device in a kind of down-hole, comprise top connection 1 and inject pipe nipple 12, this device is made up of last sealing mechanism, detent mechanism, cement injecting mechanism and lower seal mechanism, said mechanism with tube connector 5,10 and 15 connections, is connected this device with lower contact 19 by top connection 1 with running string.Last sealing mechanism has seal 2, central tube 3 and box cupling 4, and seal 2 one or several are installed in central tube 3 outsides, will go up sealing mechanism by box cupling 4 and be connected with tube connector 5; Lower seal mechanism is identical with last sealing mechanism structure, has seal 17, central tube 18 and box cupling 16, and the seal 2 of last sealing mechanism is relative with the distending direction of the seal 17 of lower seal mechanism.Detent mechanism has box cupling 6, resilient sleeve 7, central tube 8 and box cupling 9, the central tube 8 outer resilient sleeve 7 of installing, and two ends are connected with tube connector 10 with tube connector 5 with box cupling 9 by box cupling 6.The cement injecting mechanism has adapter sleeve 11, injects pipe nipple 12 and adapter sleeve 14, by adapter sleeve 11 and 14 and tube connector 10 and 15 connections; Inject pipe nipple 12 and be provided with injection hole 13, two ends are connected with adapter sleeve 14 with adapter sleeve 11, are provided with sealing ring in the joint face of adapter sleeve 11,14 and injection pipe nipple 12.During The field, the utility model is gone into the well cementing step by step from bottom to top, the cement sheath of the notes bottom earlier with interior tubing string connection.Connect when going into the well, top connection 1 of the present utility model is connected with tubing string in the top, and lower contact 19 is connected with tubing string in the bottom, determines the cementing section by detent mechanism of the present utility model.On put on tubing string in the portion, the seal 2 of this device and seal 17 are striden every in the both sides of external packer of pipe, set up a self sealss space between sealing mechanism and the lower seal mechanism on of the present utility model.Add hydraulic pressure from interior tubing string, pressure opens external packer of pipe by the injection hole 13 of tubing string in the top and this device cement injecting mechanism, and fluid enters external packer of pipe, treats that the external packer of pipe expansion finishes, and puts pressure.On put on tubing string in the portion, seal 2 of the present utility model and seal 17 are striden every sizing collar both sides outside pipe.Add hydraulic pressure from interior tubing string, pressure is opened the outer sizing collar of pipe by tubing string, injection hole 13 in the top, and the annular space that cement paste enters into well and sleeve pipe forms cement sheath.Treat that the cement injection finishes, transfer tubing string in the top, resilient sleeve 7 will be managed outer sizing collar and be closed, and finish first order cementing.Same method, the external packer of pipe of the second level cementing section that at first expands, the sizing collar of hydraulic open second level cementing section forms second level cement sheath then, close the outer sizing collar of pipe of second level cementing section at last with resilient sleeve 7, finish second level cementing.According to on-the-spot needs, utilize the utility model can finish the multistage cementing well cementing operation.
Claims (4)
1, pipe stage cementing device in a kind of down-hole, comprise top connection (1) and inject pipe nipple (12), it is characterized in that this device is made up of last sealing mechanism, detent mechanism, cement injecting mechanism and lower seal mechanism, said mechanism with tube connector (5), (10) and (15) connection, is connected this device with lower contact (19) by top connection (1) with running string.
2, pipe stage cementing device in a kind of down-hole according to claim 1, it is characterized in that sealing mechanism has seal (2), central tube (3) and box cupling (4), seal (2) is installed one or several in central tube (3) outside, will go up sealing mechanism by box cupling (4) and be connected with tube connector (5); Lower seal mechanism is identical with last sealing mechanism structure, has seal (17), central tube (18) and box cupling (16), and the seal of last sealing mechanism (2) is relative with the distending direction of the seal (17) of lower seal mechanism.
3, pipe stage cementing device in a kind of down-hole according to claim 1, it is characterized in that detent mechanism has box cupling (6), resilient sleeve (7), central tube (8) and box cupling (9), the outer resilient sleeve (7) of installing of central tube (8), two ends by box cupling (6) and box cupling (9) and tube connector (5) be connected (10) and manage connection.
4, pipe stage cementing device in a kind of down-hole according to claim 1, it is characterized in that the cement injecting mechanism has adapter sleeve (11), injects pipe nipple (12) and adapter sleeve (14), by adapter sleeve (11) and (14) and tube connector (10) and (15) connection; Inject pipe nipple (12) and be provided with injection hole (13), two ends are connected with adapter sleeve (14) with adapter sleeve (11), are provided with sealing ring in adapter sleeve (11), (14) with the joint face that injects pipe nipple (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03217998 CN2625572Y (en) | 2003-05-30 | 2003-05-30 | Down-hole inner tube stepped cementing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03217998 CN2625572Y (en) | 2003-05-30 | 2003-05-30 | Down-hole inner tube stepped cementing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2625572Y true CN2625572Y (en) | 2004-07-14 |
Family
ID=34243796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03217998 Expired - Fee Related CN2625572Y (en) | 2003-05-30 | 2003-05-30 | Down-hole inner tube stepped cementing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2625572Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361001A (en) * | 2018-01-10 | 2018-08-03 | 河南中源化学股份有限公司 | A kind of deep trona drilling well exploitation cementing stage technique |
| CN111101886A (en) * | 2018-10-25 | 2020-05-05 | 中国石油化工股份有限公司 | Sectional well cementing tool and technological method |
-
2003
- 2003-05-30 CN CN 03217998 patent/CN2625572Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108361001A (en) * | 2018-01-10 | 2018-08-03 | 河南中源化学股份有限公司 | A kind of deep trona drilling well exploitation cementing stage technique |
| CN111101886A (en) * | 2018-10-25 | 2020-05-05 | 中国石油化工股份有限公司 | Sectional well cementing tool and technological method |
| CN111101886B (en) * | 2018-10-25 | 2023-08-04 | 中国石油化工股份有限公司 | Sectional well cementation tool and process method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |